vue start in browser

HTML

<script src="https://unpkg.com/[email protected]"></script>

<div id="vue-app">
  <span v-bind:class="[customClass.size, customClass.color]">
    {{ message }}
  </span>
</div>

CSS

.big-font-size {
  transform:rotate(45deg);
}
.font-color-red {
  color: red;
}

JavaScript

new Vue({
	el: '#vue-app',
  data: function () {
    return {
    	message: '안녕하세요. 뷰(Vue)입니다.',
      customClass: {
      	size: 'big-font-size',
        color: 'font-color-red'
      }
    }
  }
})